Effect of Superimposed Vibrations on Droplet Oscillation Modes in Prilling Process
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Date
2020
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MDPI
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Abstract
This article was aimed to solve an urgent problem of ensuring quality for prilling processes in
vibrational prilling equipment. During the research, the need for the application of vibrational prilling
to create a controlled impact on the process of jet decay on droplets with the proper characteristics was
substantiated. Based on the experimental and theoretical studies of the process of decay of a liquid
jet into drops, axisymmetric droplet oscillation modes for the different frequencies were observed.
Frequency ranges of transition between modes of decay of a jet into drops were obtained. As a result,
the mathematical model of the droplet deformation was refined. The experimental research data
substantiated this model, and its implementation allowed determining the analytical dependencies
for the components of the droplet deformation velocity. The proposed model explains the existence of
different droplet oscillation modes depending on the frequency characteristics of the superimposed
vibrational impact. Based on an analytical study of the droplet deformation velocity components,
the limit values of the characteristics defining the transition between the different droplet oscillation
modes were discovered. Analytical dependencies were also obtained to determine the diameter of
the satellites and their total number.
Keywords
prilling, droplet deformation, surface tension, superimposed vibrations
Citation
Pavlenko, I.; Sklabinskyi, V.; Piteľ, J.; Židek, K.; Kuric, I.; Ivanov, V.; Skydanenko, M.; Liaposhchenko, O. Effect of Superimposed Vibrations on Droplet Oscillation Modes in Prilling Process. Processes 2020, 8, 566. https://doi.org/10.3390/pr8050566